Erotic massage parlours and saunas in Glasgow used to the city’s way of legalizing brothels. Licenses were issued and everything went fine until 2013. They decided not to issue new licenses and closed most salons down. You can still pay for some action, but they’re not actual brothels. It’s all very hush-hush. There are dozens of places where you can get a sensual rub and tug in Glasgow. Delight Tantric Massage (https://massage-in-glasgow.co.uk/) located near Glasgow Central Train station is one of them. Jasmine (https://www.jasminethaimassage.net/) at 100A Brunswick Street does great Thai massage, but I wouldn’t count on any extras.
I would go straight for the outcall freelance erotic masseuses like Veronica (http://www.eroticmassageglasgow.com/) or all the “Sun” classifieds (https://directory.thesun.co.uk/find/glasgow/sensual-massage). A session will cost you something around €150-€200 including the happy ending. A number of gay-only saunas recently popped up in Glasgow. Take the Pipeworks (https://thepipeworks.com/) at 5 Metropole Ln as an example. They got glory holes and all sorts of stuff. I’m curious why there are no spots like that for the heterosexual clientele.